Public Member Functions
	gsc_adaptive_stage (MHA_AC::algo_comm_t &ac, const mhaconfig_t, int lenOldSamps, bool doCircularComp, float mu, float alp, bool useVAD, const std::string &vadName_)
	Ctor of the rt processing class. More...

	~gsc_adaptive_stage ()=default

mha_wave_t *	process (mha_wave_t *wavin)
	Processing callback. More...

Private Member Functions
void	insert ()
	Re-insert all AC variables into the AC space. More...

Private Attributes
MHA_AC::algo_comm_t &	ac
	Handle to AC space. More...

unsigned int	lenOldSamps
	Number of old samples to buffer. More...

unsigned int	lenNewSamps
	Number of new samples. More...

unsigned int	bufSize
	Total buffer size. More...

float	frac_old
	Fraction of new samples to total buffer size. More...

mha_fft_t	mha_fft
	FFT handle. More...

unsigned int	nfreq
	Number of frequency bins. More...

unsigned int	nchan
	Number of channels in input signal. More...

unsigned int	desired_chan
	Channel index containing the desired response. More...

bool	doCircularComp
	Whether to compensate for circular convolution. More...

float	mu
	Linear coefficient for gradient. More...

float	alp
	Autoregressive coefficient for estimating PSD. More...

bool	useVAD
	Wether to use VAD. More...

std::string	vadName
	Name of VAD AC variable. More...

MHA_AC::waveform_t	x
	Buffered input signal. More...

MHA_AC::spectrum_t	X
	FFT of the buffered input signal. More...

MHA_AC::spectrum_t	W
	Time-varying filter. More...

MHA_AC::spectrum_t	Y
	Filter output, frequency domain. More...

MHA_AC::waveform_t	y
	Filter output, time domain. More...

MHA_AC::waveform_t	d
	Desired response. More...

MHA_AC::waveform_t	e
	Error signal, time domain. More...

MHA_AC::spectrum_t	E
	Error signal, frequency domain. More...

MHA_AC::spectrum_t	E2
	Error spectrum multiplied by input spectrum: E2=X*E. More...

MHA_AC::waveform_t	grad
	Gradient. More...

MHA_AC::spectrum_t	Grad
	FT of the gradient. More...

MHA_AC::waveform_t	e_out
	Error signal. More...

MHA_AC::waveform_t	P
	Signal power estimate. More...

MHA_AC::waveform_t	Psum
	Signal power estimate, summed over all channels. More...

Constructor & Destructor Documentation

◆ gsc_adaptive_stage()

gsc_adaptive_stage::gsc_adaptive_stage::gsc_adaptive_stage	(	MHA_AC::algo_comm_t &	ac,
		const mhaconfig_t	in_cfg,
		int	lenOldSamps,
		bool	doCircularComp,
		float	mu,
		float	alp,
		bool	useVAD,
		const std::string &	vadName_
	)

Ctor of the rt processing class.

Parameters

ac	Handle to AC space
in_cfg	Input signal configuration
lenOldSamps	How many old samples to buffer
doCircularComp	Compensate for circular convolution?
mu	Scalar coefficient for gradient
alp	Autoregressive coefficient for estimating PSD
useVAD	Use voice activity detection?
vadName_	Name of the VAD AC variable

◆ ~gsc_adaptive_stage()

gsc_adaptive_stage::gsc_adaptive_stage::~gsc_adaptive_stage ( )

default

Member Function Documentation

◆ process()

mha_wave_t * gsc_adaptive_stage::gsc_adaptive_stage::process ( mha_wave_t * wavin )

Processing callback.

Parameters

wavin input signal

Returns: Returns a pointer to the output signal

◆ insert()

void gsc_adaptive_stage::gsc_adaptive_stage::insert ( )

private

Re-insert all AC variables into the AC space.

Member Data Documentation

◆ ac

MHA_AC::algo_comm_t& gsc_adaptive_stage::gsc_adaptive_stage::ac

private

Handle to AC space.

◆ lenOldSamps

unsigned int gsc_adaptive_stage::gsc_adaptive_stage::lenOldSamps

private

Number of old samples to buffer.

◆ lenNewSamps

unsigned int gsc_adaptive_stage::gsc_adaptive_stage::lenNewSamps

private

Number of new samples.

◆ bufSize

unsigned int gsc_adaptive_stage::gsc_adaptive_stage::bufSize

private

Total buffer size.

Must be lenOldSamps+lenNewSamps

◆ frac_old

float gsc_adaptive_stage::gsc_adaptive_stage::frac_old

private

Fraction of new samples to total buffer size.

◆ mha_fft

mha_fft_t gsc_adaptive_stage::gsc_adaptive_stage::mha_fft

private

FFT handle.

◆ nfreq

unsigned int gsc_adaptive_stage::gsc_adaptive_stage::nfreq

private

Number of frequency bins.

◆ nchan

unsigned int gsc_adaptive_stage::gsc_adaptive_stage::nchan

private

Number of channels in input signal.

◆ desired_chan

unsigned int gsc_adaptive_stage::gsc_adaptive_stage::desired_chan

private

Channel index containing the desired response.

Always last channel by convention

◆ doCircularComp

bool gsc_adaptive_stage::gsc_adaptive_stage::doCircularComp

private

Whether to compensate for circular convolution.

◆ mu

float gsc_adaptive_stage::gsc_adaptive_stage::mu

private

Linear coefficient for gradient.

◆ alp

float gsc_adaptive_stage::gsc_adaptive_stage::alp

private

Autoregressive coefficient for estimating PSD.

◆ useVAD

bool gsc_adaptive_stage::gsc_adaptive_stage::useVAD

private

Wether to use VAD.

◆ vadName

std::string gsc_adaptive_stage::gsc_adaptive_stage::vadName

private

Name of VAD AC variable.

◆ x

MHA_AC::waveform_t gsc_adaptive_stage::gsc_adaptive_stage::x

private

Buffered input signal.

◆ X

MHA_AC::spectrum_t gsc_adaptive_stage::gsc_adaptive_stage::X

private

FFT of the buffered input signal.

◆ W

MHA_AC::spectrum_t gsc_adaptive_stage::gsc_adaptive_stage::W

private

Time-varying filter.

◆ Y

MHA_AC::spectrum_t gsc_adaptive_stage::gsc_adaptive_stage::Y

private

Filter output, frequency domain.

◆ y

MHA_AC::waveform_t gsc_adaptive_stage::gsc_adaptive_stage::y

private

Filter output, time domain.

◆ d

MHA_AC::waveform_t gsc_adaptive_stage::gsc_adaptive_stage::d

private

Desired response.

◆ e

MHA_AC::waveform_t gsc_adaptive_stage::gsc_adaptive_stage::e

private

Error signal, time domain.

◆ E

MHA_AC::spectrum_t gsc_adaptive_stage::gsc_adaptive_stage::E

private

Error signal, frequency domain.

◆ E2

MHA_AC::spectrum_t gsc_adaptive_stage::gsc_adaptive_stage::E2

private

Error spectrum multiplied by input spectrum: E2=X*E.

◆ grad

MHA_AC::waveform_t gsc_adaptive_stage::gsc_adaptive_stage::grad

private

Gradient.

◆ Grad

MHA_AC::spectrum_t gsc_adaptive_stage::gsc_adaptive_stage::Grad

private

FT of the gradient.

◆ e_out

MHA_AC::waveform_t gsc_adaptive_stage::gsc_adaptive_stage::e_out

private

Error signal.

◆ P

MHA_AC::waveform_t gsc_adaptive_stage::gsc_adaptive_stage::P

private

Signal power estimate.

◆ Psum

MHA_AC::waveform_t gsc_adaptive_stage::gsc_adaptive_stage::Psum

private

Signal power estimate, summed over all channels.

The documentation for this class was generated from the following files:

Public Member Functions

Private Member Functions

Private Attributes

Constructor & Destructor Documentation

◆ gsc_adaptive_stage()

◆ ~gsc_adaptive_stage()

Member Function Documentation

◆ process()

◆ insert()

Member Data Documentation

◆ ac

◆ lenOldSamps

◆ lenNewSamps

◆ bufSize

◆ frac_old

◆ mha_fft

◆ nfreq

◆ nchan

◆ desired_chan

◆ doCircularComp

◆ mu

◆ alp

◆ useVAD

◆ vadName

◆ x

◆ X

◆ W

◆ Y

◆ y

◆ d

◆ e

◆ E

◆ E2

◆ grad

◆ Grad

◆ e_out

◆ P

◆ Psum